Evidence map›Paper›PMID 25731972›Full record

ArticleAnalytical chemistry2015

Functional characterization of botulinum neurotoxin serotype H as a hybrid of known serotypes F and A (BoNT F/A).

Suzanne R Kalb, Jakub Baudys, Brian H Raphael, Janet K Dykes, Carolina Lúquez, Susan E Maslanka, John R Barr

Abstract read
In one paragraph

Article in Analytical chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
10.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

  1. Guideline
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Novel Native and Engineered Botulinum Neurotoxins.Handbook of experimental pharmacology · 2021
    Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Molecular Characterization ofFoodborne pathogens and disease · 2019
    Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Substrate cleavage and duration of action of botulinum neurotoxin type FA ("H, HA").Toxicon : official journal of the International Society on Toxinology · 2018
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Suzanne R Kalb†Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Laboratory Sciences, 4770 Buford Hwy NE, Atlanta, Georgia 30341, United States.
Jakub Baudys†Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Laboratory Sciences, 4770 Buford Hwy NE, Atlanta, Georgia 30341, United States.
Brian H Raphael‡Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases, Enteric Diseases Laboratory Branch, 1600 Clifton Road, Atlanta, Georgia 30329, United States.
Janet K Dykes‡Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases, Enteric Diseases Laboratory Branch, 1600 Clifton Road, Atlanta, Georgia 30329, United States.
Carolina Lúquez‡Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases, Enteric Diseases Laboratory Branch, 1600 Clifton Road, Atlanta, Georgia 30329, United States.
Susan E Maslanka‡Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases, Enteric Diseases Laboratory Branch, 1600 Clifton Road, Atlanta, Georgia 30329, United States.
John R Barr†Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Laboratory Sciences, 4770 Buford Hwy NE, Atlanta, Georgia 30341, United States.
Centers for Disease Control and Prevention · USCenter for Environmental Health · USNational Center for Environmental Health · US

Funding

Intramural CDC HHS CC999999
6 · The paper itself

Abstract

A unique strain of Clostridium botulinum (IBCA10-7060) was recently discovered which produces two toxins: botulinum neurotoxin (BoNT) serotype B and a novel BoNT reported as serotype H. Previous molecular assessment showed that the light chain (LC) of the novel BoNT most resembled the bont of the light chain of known subtype F5, while the C-terminus of the heavy chain (HC) most resembled the binding domain of serotype A. We evaluated the functionality of both toxins produced in culture by first incorporating an immunoaffinity step using monoclonal antibodies to purify BoNT from culture supernatants and tested each immune-captured neurotoxin with full-length substrates vesicle-associated membrane protein 2 (VAMP-2), synaptosomal-associated protein 25 (SNAP-25), syntaxin, and shortened peptides representing the substrates. The BoNT/B produced by this strain behaved as a typical BoNT/B, having immunoaffinity for anti-B monoclonal antibodies and cleaving both full length VAMP-2 and a peptide based on the sequence of VAMP-2 in the expected location. As expected, there was no activity toward SNAP-25 or syntaxin. The novel BoNT demonstrated immunoaffinity for anti-A monoclonal antibodies but did not cleave SNAP-25 as expected for BoNT/A. Instead, the novel BoNT cleaved VAMP-2 and VAMP-2-based peptides in the same location as BoNT/F5. This is the first discovery of a single botulinum neurotoxin with BoNT/A antigenicity and BoNT/F light chain function. This work suggests that the newly reported serotype H may actually be a hybrid of previously known BoNT serotype A and serotype F, specifically subtype F5.

Indexed as

Botulinum ToxinsBotulinum Toxins, Type AChromatography, LiquidClostridium botulinumMass SpectrometryBotulinum ToxinsBotulinum Toxins, Type Abotulinum toxin type F

Identifiers

PMID25731972
PMCPMC4522910
OpenAlexW2314219369

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.